TracedParts
🇲🇾 MY
Upload BOM

74F521SCX

OBSOLETE
Fairchild Semiconductor

Magnitude Comparator Bit Active Low Output A=B 20-SOIC

End of life. Buy from remaining stock or find an alternate.

74F521SCX is a Magnitude Comparator Bit Active Low Output A=B 20-SOIC from Fairchild Semiconductor. 1 authorized distributor quotes it on TracedParts, from RM 2.39 at quantity 1, with 17,030 units in stock for immediate despatch. Figures come from the distributors' own APIs, pulled in the catalogue snapshot of 2026-09-25, and are indicative rather than a binding quote.

RoHS COMPLIANTREACH 20-SOIC (0.295", 7.50mm Width) SMD
BEST PRICE @1
RM 2.39
DigiKey · authorized
TOTAL STOCK
17,030
1 source
SHORTEST LEAD
stock
ships from warehouse
AUTHORIZED
1 / 1
tier 1 sources

Who has 74F521SCX in stock, and what does it cost?

1 authorized distributor · pulled from their APIs in the catalogue snapshot of 2026-09-25
QTY pcs
DISTRIBUTOR
STOCK
MOQ
PRICE BREAKS · MYR
LEAD
@250 PCS
TIER 1 - AUTHORIZED DISTRIBUTORfranchised - full warranty - paperwork QA will accept
AUTH
17,030
505
505+2.3851
stock
ex-warehouse
-
below MOQ 505
Buy ↗
What 250 pcs actually costs landed in Malaysia, duty and SST included: RM 690.38 RM 2.7615 per unit, DDP · estimate Open estimator →

What are the specifications of 74F521SCX?

21 parameters▾
Device specification
TypeIdentity Comparator
Number of Bits8
OutputActive Low
Output FunctionA=B
Voltage - Supply4.5V ~ 5.5V
Current - Output High, Low1mA, 20mA
Max Propagation Delay @ V, Max CL10ns @ 5V, 50pF
Operating Temperature0°C ~ 70°C
Package / Case20-SOIC (0.295", 7.50mm Width)
Supplier Device Package20-SOIC
Mounting TypeSurface Mount
Ordering & compliance
ManufacturerFairchild Semiconductor
CategoryComparators
Package20-SOIC (0.295", 7.50mm Width)
MountingSurface mount
LifecycleOBSOLETE
RoHSCompliant
Moisture levelNot applicable (through hole)
PackagingTape & reel
Country of origin
HS code

Where can I download the 74F521SCX datasheet?

link supplied by DigiKey▾
PDF
74F521SCX datasheet
link supplied by DigiKey · Fairchild Semiconductor · English
Open datasheet ↗

This is the datasheet link the distributor returned with the part record. We pass it through as they gave it, and we have not opened it - there are more than 300,000 of these and we verify only the ones we curate by hand. If it does not resolve, that is the distributor’s record, not the part.

What does 74F521SCX cost landed in Malaysia?

Malaysia · DDP · HS ▾
Goods
Freight · express 2 d
Import duty · 0 % (ITA-exempt)
Sales & service tax · 6 %
Customs clearance
Landed total

Estimate only. The correct HS classification for your import is your responsibility - see terms of service.

Is there a CAD symbol and footprint for 74F521SCX?

4 downloads▾
SCHEMATIC SYMBOL · .libPCB FOOTPRINT · .kicad_mod 3D MODEL · .stepSPICE · .mod

What can I use instead of 74F521SCX?

3 in comparators▾
CD74HC85PWE4
Texas Instruments
Magnitude Comparator Bit Active High Output A<B, A=B…
12,300
RM 2.37
SN74LS85DRE4
Texas Instruments
Magnitude Comparator Bit Active High Output A<B, A=B…
12,278
RM 2.36
CD74HC85MTE4
Texas Instruments
Magnitude Comparator Bit Active High Output A<B, A=B…
12,274
RM 2.36

Nearest peers by price within the same category. Confirm the parameters before you substitute - these are not guaranteed drop-in replacements.

Which parts are similar to 74F521SCX?

8 parts▾
LM393SNGLM339SNGLM2903SNGMIC842NYC5NLV14007UBDR2GM51943AHP#CF0JLMV331M7LM2901SNG

Common questions about 74F521SCX

7 questions▾
Is 74F521SCX in stock?
Yes. 17,030 units are in stock across 1 authorized distributor (DigiKey), as of the catalogue snapshot of 2026-09-25.
How much does 74F521SCX cost?
RM 2.3851 is the lowest unit price on this page, from DigiKey. Prices fall as quantity rises; the full price break ladder is in the quotes table. Figures come from the distributor API and are indicative, not a binding quote.
Who supplies 74F521SCX?
DigiKey. It is authorized, franchised distributor quoting through its own API. TracedParts carries no broker or open-market listings.
How old are these prices?
The catalogue is re-pulled from the distributors' APIs once a day, and the line under the Quotes heading says which pull the figures on this page came from. Prices and stock can move between pulls, so treat them as indicative and confirm on the distributor's site before you order.
Who quoted these prices?
Every row on the site comes from an authorized, franchised distributor through its own API: DigiKey, Mouser or element14. There are no broker or open-market listings on TracedParts. If a source ever changes, the row will say so.
Why do you show the source before the price?
Because who sold it decides what happens at incoming inspection, and a table sorted by price alone hides that. Rows are grouped by the distributor's status first and ordered by unit price inside the group.
Why are prices in ringgit?
Distributors quote in US dollars. TracedParts converts to MYR at a fixed reference rate that is printed on the page, not a live FX feed, so the ringgit figure is a sourcing estimate rather than the amount you will be billed.